Surface Science Blog

How To Measure Surface Free Energy?

Posted by Susanna Laurén on April 6, 2017

If you have been looking for an instrument for contact angle measurement, you have probably noticed that measuring contact angle is not always enough. Although contact angle measurement does give you an indication on the wetting properties of the surface, it is always a value that depends on the measurement liquid used.

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Topics: Surface Free Energy, Contact Angle

Fabricating Highly Organized Nanoparticle Thin Films

Posted by Jyrki Korpela on March 23, 2017

Nanoparticles and thin films made from nanoparticles are gaining recognition and use in various products and applications including displays, sensors and energy storage. These types of products often require well-controlled particle organization, density and film thickness to achieve optimal performance and efficiency.


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Topics: Thin Film Deposition and Characterization, nanotechnology, nanoparticles

Why disposable tip dispensers are superior to disposable syringes

Posted by Susanna Laurén on March 13, 2017

If you are working with inks, paints or other contaminating liquids and thinking of measuring contact angles, we have good news for you. By having a disposable tip dispenser, you can get away with messy sample handling and perform your measurements even faster. 


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Topics: Attension

5 Tips &Tricks When Taking Spectroscopic Ellipsometry and QCM-D Measurements

Posted by Brian Rodenhausen on February 22, 2017

Most effort in a spectroscopic ellipsometry and QCM-D measurement is done setting up the instruments and liquid flow assembly. To help make life a little easier, consider the following tips & tricks.

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Topics: QCM-D, Q-Sensors, ellipsometry

How to measure dynamic contact angles on superhydrophobic surfaces

Posted by Susanna Laurén on January 17, 2017

Superhydrophobic surfaces are gaining more and more attention as new applications for them arises. For surface to be superhydrophobic, it has to fulfil two requirements. The static contact angle has to be over 150 degrees but in addition to that, the surface has to have a low contact angle hysteresis. For this reason, measurement of dynamic contact angles is especially important when superhydrophobic surfaces are studied.

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Topics: Contact Angle, superhydrophobic surfaces

Vanishing interfacial tension measurement - a fast route to minimum miscibility pressure

Posted by Susanna Laurén on December 6, 2016

As the exploration of new oil reservoirs is slowing down, there is a need to be able to utilize the current oil reservoirs more efficiently. After primary and secondary recovery, at least 50% of the original oil is left behind in the reservoir [1]. Additional injections of fluids like polymers, surfactants or different gases are commonly used to displace and dissolve some of the remaining oil. This process is called tertiary or enhanced oil recovery (EOR) and can lead to an additional 8-16 % uptake of original oil in place (OOIP) [1].


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Topics: Tensiometers, Attension, Theta, Enhanced oil recovery (EOR), High Pressure Chamber

Durability of superhydrophobic surfaces – the biggest obstacle towards real life applications

Posted by Susanna Laurén on November 8, 2016

Superhydrophobic surfaces were an instant hit in the scientific community when they were introduced over two decades ago. Since then thousands of publications have documented superhydrophobicity being achieved on various different substrates, from glass to fabrics.

The great potential of superhydrophobic surfaces was apparent early on. Applications ranging from self-cleaning windows to anti-acing surfaces and non-wetting fabrics appear commonly in the literature.

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Topics: superhydrophobic surfaces

How nanomaterials interact with the environment - Understanding nanoparticle - cell membrane interactions

Posted by Matthew Dixon on October 13, 2016

How does a nanomaterial interact with a cell?


How nanomaterials interact with the environment after they have been disposed of has many implications for potential toxicity and health concerns. Whether nanomaterials are being incorporated into commercial goods for their anti-microbial properties such as in work-out clothes or used for targeted drug therapies their overall prevalence is increasing. Therefore, the likelihood of someone coming into contact with these materials is also increasing.

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Topics: QCM-D, nanoparticles, environment

Lithium ion battery materials - powering the future

Posted by Kenneth Olesen on June 23, 2016

According to the 2016 World Energy Issues Monitor1, electric storage features in second place on the list of top critical uncertainties keeping CEOs, ministers and energy experts awake at night.

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Topics: QCM-D, clean tech

Advances in Wettability Analysis for Superhydrophobic Surfaces

Posted by Maiju Pöysti on May 12, 2016

Superhydrophobic surfaces toward real-world applications



Soft Matter and Wetting research group at Aalto University published insights about superhydrophobic surfaces in Science recently1. The non-wetting surfaces have experienced an enormous boost of interest after the observation of superhydrophobicity and self-cleaning effect in natural lotus leaves.

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Topics: Contact Angle, superhydrophobic surfaces